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Scouleria
Family: Grimmiaceae
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Steven P. Churchill in Flora of North America (vol. 27)
Plants clustered in loose to compact tufts, black or brown with age. Stems ca. 4-10 cm, central strand absent; rhizoids forming a 'hold-fast,' occasionally extending from stem and abaxial surface of leaves. Leaves erect to patent when dry, when present pseudocosta marginal [submarginal]; apex often cucullate. Outer perichaetial leaves one-third shorter than inner leaves. Vaginula forming a sheath around proximal third or fourth of seta. Seta 1/3-1/2 capsule length. Capsule glossy black with age, columella when dry appearing longitudinally ribbed, when wet expanding, becoming stoutly cylindrical or ovoid. Spores 30-55 µm. Scouleria patagonica) is the only taxon found in South America.

Scouleria aquatica
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Scouleria marginata
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Scouleria siskiyouensis
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NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.